Hi, when finding maximum point of graph, where do I look at? The y axis or the x axis? Also, the answer should be "x=7" (for example), am I right? Thank you
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A point has always 2 coordinates if you're working in a plane, so a maximum $\displaystyle M$ could be for example $\displaystyle M(7,4)$.
Originally Posted by Siron A point has always 2 coordinates if you're working in a plane, so a maximum $\displaystyle M$ could be for example $\displaystyle M(7,4)$. Hmm, but the question didn't state for the coordinates of maximum point of the curve, so I thought the answer would be different. Am I wrong?
But for example $\displaystyle x=7$ can't represent a point, it represents a line (parallel to the y-axis).
Originally Posted by Siron But for example $\displaystyle x=7$ can't represent a point, it represents a line (parallel to the y-axis). Yea, I will write the answer in coordinates then Thanks a lot Btw, how do I find the equation of line of symmetry if the line (line of symmetry) itself is in the y axis ? Which number do I take?
Do you mean the $\displaystyle y-$axis itself? It's just $\displaystyle x=0$.
Originally Posted by Siron Do you mean the $\displaystyle y-$axis itself? It's just $\displaystyle x=0$. Yes. Thanks for the quick reply =)
You're welcome!